P1AA1 - Starter/Generator Inverter Phase V Temperature Sensor Circuit High Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
Comments  |  Add Comment

P1AA1 Possible Causes

  • Faulty Starter/Generator Control Module (SGCM)
  • Starter/Generator Control Module (SGCM) harness is open or shorted
  • Starter/Generator Control Module (SGCM) circuit poor electrical connection

First diagnose P1AA1 code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

Cost of diagnosing the P1AA1 code

    Labor: 1.0

    The cost of diagnosing the P1AA1 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

P1AA1 Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1aa1 Description

The Power Inverter Module (PIM) temperature 1 and 2 sensors are used for overheat protection. The thermistors are located on the control board, near the phase U or V power MOSFET. The Starter/Generator Control Module (SGCM) monitors the inverter temperature sensor for the following:

To detect if the inverter phase U or V temperature sensor is shorted low.

To detect if the inverter phase U or V temperature sensor is shorted high.

OBDII Code P1aa1 - Starter/Generator Inverter Phase V Temperature Sensor Circuit High Voltage - AutoCodes.com

P1AA1 More Information

Need more information on how to fix the P1AA1 code?
Get Access to Factory Service Manuals

P1AA1 Information for specific makes

  • P1AA1 BUICK Starter/Generator Inverter Phase V Temperature Sensor Circuit High Voltage
  • P1AA1 CADILLAC Starter/Generator Inverter Phase V Temperature Sensor Circuit High Voltage
  • P1AA1 CHEVROLET Starter/Generator Inverter Phase V Temperature Sensor Circuit High Voltage
  • P1AA1 GMC Starter/Generator Inverter Phase V Temperature Sensor Circuit High Voltage
  • P1AA1 SATURN Starter/Generator Inverter Phase V Temperature Sensor Circuit High Voltage

Need more help?

Get the P1aa1 code diagnosed by a professional: Find a repair shop in your area

Related Information

P1AA1 Comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P1aa1 code? Have you replaced any parts?
Any information is appreciated. Thanks
Top ⇧